'\" te
.\" Copyright 1989 AT&T
.\" Portions Copyright (c) 1996, Sun Microsystems, Inc. All Rights Reserved.
.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
.\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
.TH FORM_FIELD_VALIDATION 3CURSES "Dec 31, 1996"
.SH NAME
form_field_validation, set_field_type, field_type, field_arg \- forms field
data type validation
.SH SYNOPSIS
.LP
.nf
\fBcc\fR [ \fIflag\fR... ] \fIfile\fR... \fB-lform\fR \fB -lcurses \fR [ \fIlibrary\fR... ]
#include <form.h>

\fBint\fR \fBset_field_type\fR(\fBFIELD *\fR\fIfield\fR, \fBFIELDTYPE *\fR\fItype\fR...);
.fi

.LP
.nf
\fBFIELDTYPE *\fR\fBfield_type\fR(\fBFIELD *\fR\fIfield\fR);
.fi

.LP
.nf
\fBchar *\fR\fBfield_arg\fR(\fBFIELD *\fR\fIfield\fR);
.fi

.SH DESCRIPTION
.sp
.LP
\fBset_field_type()\fR associates the specified field type with \fIfield\fR.
Certain field types take additional arguments. \fBTYPE_ALNUM\fR, for instance,
requires one, the minimum width specification for the field. The other
predefined field types are: \fBTYPE_ALPHA\fR, \fBTYPE_ENUM\fR,
\fBTYPE_INTEGER\fR, \fBTYPE_NUMERIC\fR, and \fBTYPE_REGEXP\fR.
.sp
.LP
\fBfield_type()\fR returns a pointer to the field type of \fIfield\fR.
\fINULL\fR is returned if no field type is assigned.
.sp
.LP
\fBfield_arg()\fR returns a pointer to the field arguments associated with the
field type of \fIfield\fR. \fINULL\fR is returned if no field type is assigned.
.SH RETURN VALUES
.sp
.LP
\fBfield_type()\fR and \fBfield_arg()\fR return \fINULL\fR on error.
.sp
.LP
\fBset_field_type()\fR returns one of the following:
.sp
.ne 2
.na
\fBE_OK\fR
.ad
.RS 18n
The function returned successfully.
.RE

.sp
.ne 2
.na
\fBE_SYSTEM_ERROR\fR
.ad
.RS 18n
System error.
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(7) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
MT-Level	Unsafe
.TE

.SH SEE ALSO
.sp
.LP
.BR curses (3CURSES),
.BR forms (3CURSES),
.BR attributes (7)
.SH NOTES
.sp
.LP
The header \fB<form.h>\fR automatically includes the headers  \fB<eti.h>\fR and
\fB<curses.h>\fR\&.
